Hi jedione!
This theme is good, but in my opinion there are a few things that can makes it more interesting.
Instead the fixed background image, put the flyer of the game, when you move up or down it change the background (maybe with an alpha animation)
The game logo over the video is just present in the lateral whell, is better using another art like cart or marquee
The black gradient in the bottom part goes over the "select game...", remove it and put a gradient between the lateral menu and background
